﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace May_20_2021
{
    class Add:Calculate//加法
    {
        public override void DisplayResult()
        {
            Console.WriteLine("{0}+{1}={2}",this.d,this.e,this.d+this.e);
        }
    }
}
